Turbine-blade fastener



A. P. 0. MANICKE.

TURBINE BLADE FASTENER. APPLICATION FILED SEPT-18. I920.

Patented Apr. 11, 1922.

ALBERT PAUL OTTO MANICKE, OF EAS'I'ON, PENNSYLVANIA.

TURBINE-BLADE FASTENER.

Specification of Letters Patent.

Patented'Apr. 11, 1922.

Application filed September 18, 1920. Serial No. 411,183.

T 0 (ZZZ whom it may concern:

Be it known that I, ALBERT PAUL Orro MANioKE, a citizen of Germany, residing at Easton, county of Northampton, and State of Pennsylvania,'have invented certain new and useful Improvements in Turbine-Blade Fasteners, of which the following is a specification.

This invention has as its object a device for securing the wings or blades of a turbine to the rotor body thereof. 7

It is the principal object of the'invention to provide means for exchangeably securing the blades in a durable and simple manner to the rotor body of a turbine so that broken or damaged wings or blades may be quickly exchanged.

Further objects and advantages of my invention will become apparent as the descrip tion proceeds, reference being had to the accompanying drawing, in which Figure 1 is a partial end view of the device constructed according to the present invention.

Figure 2 is a side view thereof with the rotor in section looking in the direction of the arrow 2 in Figure 1.

Figure 3 is a top plan view looking in the direction of the arrow 3 in Figure 1.

Figure 4 is a rear view of the device, and

Figure 5 is a detail view of the wings.

Referring more particularly to the drawing, 10 is the rotor body which is formed with a depression 11 providing shoulders 12 and 13. Near the shoulder 13, the bottom part of the depression has a groove 14 for a purpose more fully to be described hereafter.

A movable member 15 is provided with a vertical shoulder 16 resting with its footpart against the bottom of the depression 11 and engaging with its upper horizontal flange the upper face of shoulder 13. The member 15 is held in place by a screw 17 passed through the shoulder 16 and the rotor body 10, its head 18 being sunk into a depression in the upper part of the member 15.

The blades or wings 19 of the turbine are of arcuate crosssection, as indicated at 2 Figure 1 and have a shouldered extension 21 provided at its lower end with a ridge 22 fitting into the groove 14.

The shoulder 13 of the rotor body 10 is provided with radial recesses or slots 22 for the reception of the shouldered extension 21 of the blades 19 engaging with its rear edge the inner face of the shoulder 12.

In operation, the wings or blades 19 are placed With their extensions 21 into the re cesses 22 so that the ridge 22 engages the groove 14, and when then the member 15 is placed in position as indicated in Figure and the screw 17 is screwed home the blades 19 will be securely held in place while they may be quickly exchanged.

It is obvious that changes may be made in the general arrangement and construction of the minor details of my device without departing from the spirit and scope of my invention.

What I claim as new. and desire to secure by Letters Patent of the United States is- In a device of the character described, the combination of a rotor body having a central depression and a groove in the bottom of said depression, shoulders on said body forming said depression, one of said shoulders slotted, with a plurality of blades arouate in cross-section, extensions on said blades, fitting into the slots of said shoulder,

ridges on said extensions fitting into said groove, a shouldered clamp block fitting with its shoulder into said depression and resting with its upper flange on the slotted shoulder, and a screw adapted to be passed through said block and said body for clamping said blades exchangeably in position.

In testimony whereof I have affixed my signature. 7

ALBERT PAUL OTTO MANICKE. 

